Structure of aquachloro[tris(2-aminoethyl)amine]nickel(II) chloride monohydrate

[Ni(C 6 H 18 N 4 )(H 2 O)Cl]Cl.H 2 O, M r = 311.88, monoclinic, P2 1 /a, a=14. 117 (2), b=11.040 (2), c=8.828 (1) A, β=106.8 (2) o , V=1317 (1) A 3 , Z=4, D x =1.57 Mg m -3 , λ(Mo Kα)=0.7107 A, μ=1.879 mm -1 , F(000)=656, T=293 K, R=0.030 for 2756 independent reflections [Fu >3σ(F o )]. The Ni atom is octahedrally surrounded by the four N atoms of the tren [tris(2-aminoethyl)amine] ligand, N(CH 2 CH 2 NH 2 ) 3 , one chloride ion and one water molecule. The second chloride ion and the second water molecule are not bound to Ni II and contribute only to the crystal packing stabilization